Abstract
We present the first measurement of the mass of the top quark in a sample of events (where ) selected by identifying jets containing a muon candidate from the semileptonic decay of heavy-flavor hadrons (soft muon tagging). The collision data used correspond to an integrated luminosity of and were collected by the CDF II detector at the Fermilab Tevatron Collider. The measurement is based on a novel technique exploiting the invariant mass of a subset of the decay particles, specifically the lepton from the boson of the decay and the muon from a semileptonic decay. We fit template histograms, derived from simulation of events and a modeling of the background, to the mass distribution observed in the data and measure a top quark mass of , consistent with the current world average value.
- Received 29 June 2009
DOI:https://doi.org/10.1103/PhysRevD.80.051104
©2009 American Physical Society